APERIODIC DATA READING CIRCUIT

PURPOSE:To read the detecting data to show the presence and absence of a pulse signal aperiodically by providing a pulse signal detecting circuit, a resetting signal generating circuit and a data reading circuit. CONSTITUTION:The title circuit provides a pulse signal detecting circuit 10 to output a pulse presence absence signal, a resetting signal generating circuit 20 to output a signal to reset a pulse presence absence signal and a pulse presence absence reading signal to change the phase of a pulse presence absence reading request signal and a data reading circuit 30 to input pulse presence absence signal and the pulse presence absence reading signal and read the pulse presence absence signal. Thus, the detecting data to show the presence and absence of the pulse signal can be read aperiodically and the pulse signal generated aperiodically can be detected without receiving the restraint to the timing of a pulse presence absence reading request signal.